Spanish word pronounced "k" meaning "what." This works very well when a rich american that speaks no spanish hires a mexican that speaks no english and as the american barks out orders the mexican replies with "que?" which the american things means "ok."

Rich white woman: Pick up Bart from school and then take the dry cleaning down to the place then you can take my mink coat to the cold storage.
Lopez: Que?
Rich white woman: Good, thank you Carl *leaves*
Lopez: ...que?